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Issue 2, 2011
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Electrocatalytic detection of polysaccharides at picomolar concentrations

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Abstract

Electroinactive polysaccharides (PS) modified by osmium(VI) complexes with nitrogenous ligands produce redox couples at carbon and mercury electrodes. We show that PS adducts with Os(VI) 2,2′-bipyridine produce at ∼−1.2 V (against Ag/AgCl/3 M KCl electrode) an additional peak at mercury and solid amalgam electrodes. This peak is due to the catalytic hydrogen evolution, allowing detection of PS (such as dextran and mannan) at picomolar concentrations.

Graphical abstract: Electrocatalytic detection of polysaccharides at picomolar concentrations

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Article information


Submitted
03 Sep 2010
Accepted
25 Oct 2010
First published
11 Nov 2010

Analyst, 2011,136, 321-326
Article type
Paper

Electrocatalytic detection of polysaccharides at picomolar concentrations

E. Paleček and M. Trefulka, Analyst, 2011, 136, 321
DOI: 10.1039/C0AN00681E

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